According to Massac County Sheriff’s Office, at approximately 11:30 a.m. Friday, security personnel from Honeywell called the Massac County Sheriff Office advising there was a man at the front gate who they believed may have a bomb in his vehicle.

Massac County deputies arrived on scene and interviewed Thomas Clark, 61, from Beaver Dam, Ky. based on information received from Clark the Sheriff’s Office requested assistance from the following agencies as the investigation continued: Illinois State Police, Illinois Secretary of State Bomb Squad, Metropolis Police and the F.B.I.

The sheriff’s department stated all traffic on highways and rail service was closed within a 1000 feet of the plant’s entrance. At approximately 2 p.m. the bomb squad searched the vehicle and advised nothing was found. The site was cleared for traffic to resume around 3 p.m.

Thomas Clark was arrested and transported to the Massac County Sheriffs Office and was charged with disorderly conduct - making a bomb threat - a class 3 felony. Clark is being held without bond.

In a news release from Honeywell Spokesman Peter Dalpe Friday night, he said law enforcement and plant personnel had finished an inspection of the plant and found no evidence of any explosive devices and returned to normal operations Friday night. Dalpe also said in addition to local law enforcement, the plant had notified the Nuclear Regulatory Commission, the Department of Homeland Security and other appropriate government agencies, per its protocols.